Thanks Dennis! So to take this photo I used my ZWO ASI1600MM-Pro with the SkyWatcher Explorer 150PDS. Due to the coma corrector my FL has been shortened from 750 to roughly 675 . The final image is stacked in PixInsight with drizzle x2, and post processed in PhotoShop After sorting out the bad ones, I was left with the following subs: Taken on a single night in mag 21.0 Bortle 4 skies : R = 10 x 5 min B = 12 x 5 min G = 11 x 5 min L = 23 x 2 min Taken over 3 nights in mag 17.5 Bortle 9 skies : Ha = 75 x 5 min As you can see, the LRGB exposure times are not that long, hence the higher noise levels. Hope this helps! - Colin
Solid photo! What are the exposure details?
Thanks Dennis!
So to take this photo I used my ZWO ASI1600MM-Pro with the SkyWatcher Explorer 150PDS.
Due to the coma corrector my FL has been shortened from 750 to roughly 675
.
The final image is stacked in PixInsight with drizzle x2, and post processed in PhotoShop
After sorting out the bad ones, I was left with the following subs:
Taken on a single night in mag 21.0 Bortle 4 skies
:
R = 10 x 5 min
B = 12 x 5 min
G = 11 x 5 min
L = 23 x 2 min
Taken over 3 nights in mag 17.5 Bortle 9 skies
:
Ha = 75 x 5 min
As you can see, the LRGB exposure times are not that long, hence the higher noise levels.
Hope this helps!
- Colin
But in the end cats gonna be cats:)